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Meeting Summary - 09/09/24 ROS Meeting

Grid Monitor AI
09/10/2024

<img src="/storage/docs/2024/09/Sept%20Ros%20Hero.png" width="572" height="430" /> <a href="/sharing/?token=394798ff-f0a2-4dc9-9c7a-09212c8ef9f0">1</a> - Antitrust Admonition - Katie Rich <a href="/sharing/?token=3db63c70-9db7-4c03-86de-7f1c7df34361">2</a> - Agenda Review - Katie Rich <a href="/sharing/?token=2a6ead3f-f9de-4d5f-89e0-5bf78de7f078">3</a> - Approval of ROS Meeting Minutes - Possible Vote - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">August 1 2024 ROS meeting minutes added to combo ballot.</li> </ul> <a href="/sharing/?token=81f2ac80-9a80-4d9f-814b-0be0446e22cd">4</a> - Technical Advisory Committee - TAC Update - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">TAC approved NOGRR262 related to NPRR1220 and NPRR1121.</li> <li style="font-weight: 400;" aria-level="1">Stakeholder process discussion for TAC moved to the September 19 meeting.</li> </ul> <a href="/sharing/?token=b3b3ee9d-382f-4d83-9e3e-4d914667c06b">5</a> - ERCOT Reports <a href="/sharing/?token=cca82bce-34f6-48e3-a5f4-568e660e9785">5.1</a> - Operations <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/03/july-2024-ercot-operations-report-public.docx">Report</a> - Alex Lee <ul> <li style="font-weight: 400;" aria-level="1">Low demand in July compared to previous July.</li> <li style="font-weight: 400;" aria-level="1">Peak demand: 81,010 MW on July 1.</li> <li style="font-weight: 400;" aria-level="1">Previous year's July peak demand: 82,964 MW.</li> <li style="font-weight: 400;" aria-level="1">Solar generation record: 20,484 MW on July 31.</li> <li style="font-weight: 400;" aria-level="1">Two frequency events due to generator trips.</li> <li style="font-weight: 400;" aria-level="1">One frequency event led to deployment of ECRS.</li> <li style="font-weight: 400;" aria-level="1">No RRS deployments in July.</li> <li style="font-weight: 400;" aria-level="1">One DC tide curtailment due to forced outage.</li> <li style="font-weight: 400;" aria-level="1">Three HRUC commitments, all due to congestion.</li> <li style="font-weight: 400;" aria-level="1">Hurricane Beryl made landfall in Texas.</li> <li style="font-weight: 400;" aria-level="1">OCN operating condition notice, advisory watch, and emergency notice issued for hurricane.</li> </ul> <a href="/sharing/?token=187c6137-9c3c-4bcf-adf5-be07de31fdcf">5.2</a> - System Planning <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/14/systemplanningros_july2024.docx">Report</a> - Ping Yan <ul> <li style="font-weight: 400;" aria-level="1">ERCOT will hold a workshop for HV 765 kV vendors on September 18 at Med Center.</li> <li style="font-weight: 400;" aria-level="1">More information available on the ERCOT website.</li> </ul> <a href="/sharing/?token=c6b45c77-0e0a-4e47-a4b3-1cb7aeb40aa6">5.3</a> - 2024 Annual Under-Frequency Load Shed - UFLS - <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/05-2024-ercot-ufls-survey-results.pptx">Survey Results</a> - Jake Pedigo Background: <ul> <li style="font-weight: 400;" aria-level="1">Purpose: Ensure the required automatic under frequency load shed circuits provide appropriate load relief.</li> <li style="font-weight: 400;" aria-level="1">Reference: ERCOT nodal operating guides, Section 2.6.1 (1)</li> </ul> Survey Results: <ul> <li style="font-weight: 400;" aria-level="1">Overall Results: All UFLS stages were satisfied. 2024 observed load: 55,616 MW. 2023 result: 30.95% at 52,679 MW of load.</li> <li style="font-weight: 400;" aria-level="1">Revisions: <ul> <li style="font-weight: 400;" aria-level="3">Changes: Increases load shed stages from three to five and adds a minimum time delay of six cycles.</li> <li style="font-weight: 400;" aria-level="3">Status: Supplemental UFLS stages implementation is allowed but not required; two entities have started implementation.</li> </ul> <ul> <li style="font-weight: 400;" aria-level="3">Changes: Allows anti-stall UFLS stages, required no earlier than October 1, 2026.</li> <li style="font-weight: 400;" aria-level="3">Status: Two TO entities have started implementation affecting the survey percentage marginally.</li> </ul> </li> <ul> <li style="font-weight: 400;" aria-level="2">NOGRR247:</li> <li style="font-weight: 400;" aria-level="2">NOGRR226:</li> </ul> </ul> <a href="/sharing/?token=d75771dd-e363-419c-a686-87f2be7a028c">5.4</a> - Generic Transmission Constraint <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/05-gtcupdate_ros_sep2024.pdf">GTC Update</a> - Yunzhi Cheng <ul> <li style="font-weight: 400;" aria-level="1">Recent Panhandle GTC update based on Q2 2024 QSA study, with no interface definition changes.</li> <li style="font-weight: 400;" aria-level="1">Panhandle GDL under no priority and with priority conditions based on nearby panhandle IBRs including wind and shoulder dispatch at 90%.</li> <li style="font-weight: 400;" aria-level="1">Previous discussion on assumptions for Panhandle GTC limits.</li> <li style="font-weight: 400;" aria-level="1">Before update, Panhandle TDL under no priority condition was based on nearby panhandle wind solar dispatch 90%. For priority conditions, it was 100%.</li> <li style="font-weight: 400;" aria-level="1">Current GTC update standardizes conditions to 90% wind and solar dispatch for both priority and non-priority conditions.</li> <li style="font-weight: 400;" aria-level="1">GTC update became effective on August 1.</li> <li style="font-weight: 400;" aria-level="1">Detailed info available on ERCOT's IMIS system.</li> <li style="font-weight: 400;" aria-level="1">Large load impact on McKamey GTC discussed.</li> <li style="font-weight: 400;" aria-level="1">Seven operational large loads within McKamey GTC area, all connected to 130 kV system totaling 480 megawatts.</li> <li style="font-weight: 400;" aria-level="1">Study used composite load model by TSPs, including motor and electronic components.</li> <li style="font-weight: 400;" aria-level="1">Composite model: motors account for 10% and electronic components for 90% of load.</li> <li style="font-weight: 400;" aria-level="1">Assumption that electronic component will trip with no reconnection if voltage drops below 0.75 per unit.</li> <li style="font-weight: 400;" aria-level="1">Observed material impact of large load on GTC limit, reducing it by 200 megawatts under certain conditions.</li> </ul> <a href="/sharing/?token=28c04cb5-10e5-42d0-9cfa-f9ab5a93ff75">5.5</a> - Outage Coordination for Private Use Network - PUN Resource Planned Outages <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/03/5-outage-coordiantion-for-pun-and-igf-september-ros-2024.pptx">Update</a> - ERCOT Staff <ul> <li style="font-weight: 400;" aria-level="1">Provided a high-level status update following the August report to ROS.</li> <li style="font-weight: 400;" aria-level="1">Summarized challenges in outage coordination due to NPRR945</li> <li style="font-weight: 400;" aria-level="1">Highlighted proposed solutions with no impact to registration but updates to internal models and processes.</li> <li style="font-weight: 400;" aria-level="1">Aiming to recognize industrial generation facilities (IGF) related to PUNs for better outage coordination.</li> <li style="font-weight: 400;" aria-level="1">Implementing a new native network model within internal applications, expected to complete by end of September.</li> <li style="font-weight: 400;" aria-level="1">Developing processes to work with existing and new registrar PUNs for proper IGF identification.</li> <li style="font-weight: 400;" aria-level="1">Tool implementation expected by September end; additional steps required through October and end of the year.</li> <li style="font-weight: 400;" aria-level="1">Addressed a question from Steve Reedy about identifying and handling PUN loads in Load Distribution Factors (LDFs).</li> <li style="font-weight: 400;" aria-level="1">Confirmed no change to the formal registration process, but possibly additional internal recognition for IGFs.</li> <li style="font-weight: 400;" aria-level="1">Will follow up on specific details regarding LDF treatment and provide updates next month.</li> </ul> <a href="/sharing/?token=f28d714c-1bb9-49f6-b668-1a7e68226b9b">5.6</a> - Proposed Changes to Ancillary Service Methodology for 2025 - Vote - Luis Hinojosa <h4>Key Discussions:</h4> <ul> <li style="font-weight: 400;" aria-level="1">Introduction of <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/06/5-2025_as_methodology_sep_ros-v2.zip">proposed changes</a> to the 2025 Ancillary Services (AS) methodology.</li> <li style="font-weight: 400;" aria-level="1">Review and recap of previous discussions and slide presentations shared with working groups.</li> <li style="font-weight: 400;" aria-level="1">Main changes highlighted for various services: <ul> <li style="font-weight: 400;" aria-level="3">Removal of 90th percentile coverage during sunset hours.</li> <li style="font-weight: 400;" aria-level="3">Frequency recovery portion set to 70th percentile of historic net load and inertia.</li> <li style="font-weight: 400;" aria-level="3">New calculation method for required capacity takes the maximum of either frequency recovery or net load forecast error calculations.</li> <li style="font-weight: 400;" aria-level="2">Regulation Service: Switching to use net load forecast errors rather than net load ramping.</li> <li style="font-weight: 400;" aria-level="2">ECRS: <ul> <li style="font-weight: 400;" aria-level="2">Non-Spin Requirement: Using a four-hour ahead net load forecast error instead of six-hour during off-peak hours (23 to 6).</li> <li style="font-weight: 400;" aria-level="2">No changes to RRS methodology; IFRO change noted from 1185 to 1365 for 2025.</li> </ul> </li> </ul> </li> <li style="font-weight: 400;" aria-level="1">Clarification of adjustments to ECRS quantities and posting of updated slides.</li> <li style="font-weight: 400;" aria-level="1">Presentation of impacts of the proposed changes on monthly average quantities for Regulation Up, Regulation Down, ECRS, and Non-Spin services.</li> <li style="font-weight: 400;" aria-level="1">Detailed discussion on reduced ECRS quantities and changes calculation methodology.</li> <li style="font-weight: 400;" aria-level="1">Questions and concerns raised by attendees regarding: <ul> <li style="font-weight: 400;" aria-level="2">IMM recommendations and their incorporation into the process.</li> <li style="font-weight: 400;" aria-level="2">Potential reliance on RUCs due to reduced procurement of ancillary services.</li> <li style="font-weight: 400;" aria-level="2">Details on ERCOT's analysis leading to proposed ECRS changes.</li> </ul> </li> <li style="font-weight: 400;" aria-level="1">Decision to seek endorsement from ROS for the 2025 AS methodology.</li> <li style="font-weight: 400;" aria-level="1">Votes taken with a summary of motions and results.</li> </ul> <ul> <li style="font-weight: 400;" aria-level="1">Motion To endorse proposed changes to the Ancillary Service Methodology for 2025 as recommended by ERCOT Staff </li> </ul> <img src="/storage/docs/2024/09/AS%20ROS%20Ballot.png" width="572" height="548" /> <a href="/sharing/?token=32bafc3d-aea4-454b-80f9-6e218a69c4b0">6</a> - ROS Revision Requests - Vote - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">Two items for IA review.</li> <li style="font-weight: 400;" aria-level="1">Both items have no impact.</li> <li style="font-weight: 400;" aria-level="1">Items are NOGRR263 and NOGRR264.</li> <li style="font-weight: 400;" aria-level="1">NOGRR263 and NOGRR264 are related to NPRR1235, the DRS standalone product.</li> </ul> <a href="/sharing/?token=d2181ccc-4af5-41ad-92a3-529ee5a611e5">6.2</a> - NOGRR263, Clarification of Controllable Load Resource Primary Frequency Response Responsibilities <ul> <li style="font-weight: 400;" aria-level="1">Jordan Schofield proposed a slight revision to NOGRR263, primarily a clerical change.</li> <li style="font-weight: 400;" aria-level="1">NOGRR263 was introduced three months before NPRR1244 and initially stood alone.</li> <li style="font-weight: 400;" aria-level="1">With the impact analysis publication, it is clear NPRR1244 holds the significant changes.</li> <li style="font-weight: 400;" aria-level="1">The proposal is to switch the 'related to' label from NPRR1244 to NOGRR263 to direct attention to NPRR1244 for full project impacts.</li> <li style="font-weight: 400;" aria-level="1">There was consensus to move forward with the combined impact analysis for both NOGRRs.</li> <li style="font-weight: 400;" aria-level="1">Motion to endorse and forward to TAC the 8/1/24 ROS Report as revised by ROS and the 9/6/24 Impact Analysis added to the combo ballot.</li> </ul> <a href="/sharing/?token=bb78d0c8-3075-41c7-9912-3c9a0505dc60">6.3</a> - NOGRR264, Related to NPRR1235, Dispatchable Reliability Reserve Service as a Stand-Alone Ancillary Service <ul> <li style="font-weight: 400;" aria-level="1">Motion to endorse and forward to TAC the 8/1/24 ROS Report and 5/29/24 Impact Analysis added to the combo ballot.</li> </ul> <a href="/sharing/?token=d025600f-613f-4710-b6d4-4df14c29ac64">6.4</a> - NOGRR268, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era <ul> <li style="font-weight: 400;" aria-level="1">Motion to table NOGRR268 added to the combo ballot.</li> </ul> <a href="/sharing/?token=232b62d7-8322-4ece-a693-4be53fe2ff49">6.5</a> - PGRR118, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era <ul> <li style="font-weight: 400;" aria-level="1">Motion to table PGRR118 added to the combo ballot.</li> </ul> <a href="/sharing/?token=53ecfca1-432b-4805-a3ad-448746de79fb">7</a> - NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era - Possible Vote - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">Motion to request PRS to table NPRR1246 added to the combo ballot.</li> </ul> <a href="/sharing/?token=f0179613-87d3-4c92-b738-77df860f4623">8</a> - OBDRR052, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era - Possible Vote - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">Motion to request TAC continue to table OBDRR052 added to the combo ballot.</li> </ul> <a href="/sharing/?token=14b7a686-34df-4151-b55e-431b70a97ac0">9</a> - NPRR1229 - NPRR1239 - NPRR1240 - Revision Requests Tabled at PRS and Referred to ROS - Possible Vote - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">NPRR1229 is still under discussion at WMWG; no action needed currently.</li> <li style="font-weight: 400;" aria-level="1">Previous requests were made to table NPRR1239, NPRR1240, and associated PGRRs and NOGRRs for another month of review.</li> <li style="font-weight: 400;" aria-level="1">Chase from Southern Power supported moving forward with NPRR1239 and NPRR1240 after the additional review time.</li> <li style="font-weight: 400;" aria-level="1">It was agreed that the associated NOGRRs and PGRRs can also move forward.</li> <li style="font-weight: 400;" aria-level="1">Confirmed addition to the combo for the mentioned revision requests.</li> <li style="font-weight: 400;" aria-level="1">NPRR1239 - Motion to endorse NPRR1239 as submitted added to the combo ballot.</li> <li style="font-weight: 400;" aria-level="1">NPRR1240 - Motion to endorse NPRR1240 as submitted added to the combo ballot.</li> </ul>   <a href="/sharing/?token=c93f714f-362f-41d6-8270-5beb24c3f030">10</a> - Revision Requests Tabled at ROS (Possible Vote) Katie Rich  <ul> <li style="font-weight: 400;" aria-level="1">PGRR073 - Not Mentioned.</li> <li style="font-weight: 400;" aria-level="1">NOGRR266 - To recommend approval of NOGRR266 as submitted </li> <li style="font-weight: 400;" aria-level="1">NOGRR267 - To recommend approval of NOGRR267 as submitted </li> <li style="font-weight: 400;" aria-level="1">PGRR116- To recommend approval of PGRR116 as submitted </li> </ul> <a href="/sharing/?token=f879a30d-f397-44dd-b005-4e938370084d">11</a> - Operations Working Group <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/11-owg_ros_20240909.pptx">Report-</a> OWG - Rickey Floyd <ul> <li style="font-weight: 400;" aria-level="1">ERCOT reached a new all-time peak for solar and renewable energy penetration.</li> <li style="font-weight: 400;" aria-level="1">Notice issued on 08/13/24 for IBR standards in accordance with FERC order 901.</li> <li style="font-weight: 400;" aria-level="1">PRC-028 and PRC-030 were approved; PRC-020 failed.</li> <li style="font-weight: 400;" aria-level="1">BAL-001 TRE SAR comment period ended; to be reviewed at MRC meeting in September and then potentially to a drafting team.</li> <li style="font-weight: 400;" aria-level="1">TPL-008 was out for comment.</li> <li style="font-weight: 400;" aria-level="1">SAR for EOP-012 was posted on the NERC site.</li> <li style="font-weight: 400;" aria-level="1">Workshop on cyber and physical security held on August 28 at Texas RE.</li> </ul> <a href="/sharing/?token=583037e3-fbc2-461f-aca2-31390a34ba2b">11.1</a> - Major Transmission Elements - MTE - list - Vote - Pushkar Chhajed <ul> <li style="font-weight: 400;" aria-level="1">ERCOT posted a public submission for the MTE list.</li> <li style="font-weight: 400;" aria-level="1">Motion to o endorse the MTE List as presented added the combo ballot.</li> <li style="font-weight: 400;" aria-level="1">The TDSP reviewed the changes with no comments.</li> <li style="font-weight: 400;" aria-level="1">No additions were made to the list.</li> <li style="font-weight: 400;" aria-level="1">The OWG achieved consensus on the list and recommended ROS endorsement.</li> <li style="font-weight: 400;" aria-level="1">There was no OTWG update at the meeting.</li> <li style="font-weight: 400;" aria-level="1">Discussion on 2024 UFLS survey results was skipped.</li> <li style="font-weight: 400;" aria-level="1">Discussed ancillary service methodology review with no proposed changes for RRS in 2025.</li> <li style="font-weight: 400;" aria-level="1">ECRS reserved capacity computation proposals for 2025 include:</li> <ul> <li style="font-weight: 400;" aria-level="2">Compute minimum ECRS requirements based on largest capacity needs.</li> <li style="font-weight: 400;" aria-level="2">Compute capacity needed to recover frequency using 70th percentile of historic inertia.</li> <li style="font-weight: 400;" aria-level="2">Remove risk coverage during sunset hours to at least 90th percentile.</li> </ul> <li style="font-weight: 400;" aria-level="1">Non-Spin reserve methodology for 2025 includes one proposed change:</li> <ul> <li style="font-weight: 400;" aria-level="2">Compute Non-Spin quantities for hour ending 23 to hour ending 6 using 4-hour ahead hourly average net load forecast error.</li> </ul> </ul> <a href="/sharing/?token=5915bce0-49e2-4e2b-8700-852af41d4a45">11.2</a> - NPRR1070, Planning Criteria for GTC Exit Solutions - OWG, PLWG - Possible Vote <ul> <li style="font-weight: 400;" aria-level="1">NPRR1070 is still being worked on by ERCOT with the PUC staff.</li> <li style="font-weight: 400;" aria-level="1">The item remains tabled at OWG.</li> </ul> <a href="/sharing/?token=e8da5680-015a-468e-816c-979fccee28eb">11.3</a> - NPRR1238, Voluntary Registration of Loads with Curtailable Load Capabilities  <ul> <li style="font-weight: 400;" aria-level="1">Discussed NPRR1238 voluntary registration of loads with curtailable load capabilities</li> <li style="font-weight: 400;" aria-level="1">Significant discussion on the topic</li> <li style="font-weight: 400;" aria-level="1">ERCOT working on comments</li> <li style="font-weight: 400;" aria-level="1">Oncor provided numerous comments</li> <li style="font-weight: 400;" aria-level="1">ERCOT reviewed Oncor’s comments and found alignment with their own</li> <li style="font-weight: 400;" aria-level="1">Update expected at the next meeting</li> </ul> <a href="/sharing/?token=fa8ca813-f53a-4b82-aae4-24b61e6c322e">11.4</a> - NOGRR265, Related to NPRR1238, Voluntary Registration of Loads with Curtailable Load Capabilities - OWG - Possible Vote <ul> <li style="font-weight: 400;" aria-level="1">NOGRR265 related to NPRR1238 remains tabled.</li> <li style="font-weight: 400;" aria-level="1">A few recommendations were made:</li> <ul> <li style="font-weight: 400;" aria-level="2">Changing the update frequency list from four times a year to two times a year.</li> <li style="font-weight: 400;" aria-level="2">Synchronized with the winter and summer large shed tables.</li> </ul> <li style="font-weight: 400;" aria-level="1">CPS was expected to provide comments; they were not present at the meeting and had not submitted comments yet.</li> </ul> <a href="/sharing/?token=847dd89d-c6a4-4e76-b439-95d2b9be26ad">12</a> - Planning Working Group - PLWG - Dylan Preas <a href="/sharing/?token=6e5cdbf0-0092-449d-9273-1a87cd5f9090">12.1</a> - PGRR107, Related to NPRR1180, Inclusion of Forecasted Load in Planning Analyses - PLWG - Possible Vote <ul> <li style="font-weight: 400;" aria-level="1">PLWG consensus on PGRR107 based on ERCOT comments from July 15.</li> <li style="font-weight: 400;" aria-level="1">Recommendation to change terminology from 'load' to 'load or load forecast' in NPRR1180.</li> <li style="font-weight: 400;" aria-level="1">Discussion on capitalization of 'load' to be consistent in ERCOT protocols and planning guide.</li> <li style="font-weight: 400;" aria-level="1">ERCOT August 28 comments to change uppercase 'L' to lowercase 'l' in planning guide section 3.1.7, except for 'DC Tie Load' which remains uppercase.</li> <li style="font-weight: 400;" aria-level="1">Motion to recommend approval of PGRR107 as amended by the 8/28/24 ERCOT comments as revised by ROS added to combo ballot.</li> </ul> <a href="/sharing/?token=75f83e2a-c132-4ef7-b046-18094bf8af79">12.2</a> - PGRR115, Related to NPRR1234, Interconnection Requirements for Large Loads and Modeling Standards for Loads 25 MW or Greater - PLWG - Possible Vote <ul> <li style="font-weight: 400;" aria-level="1">ERCOT reviewed reply comments to Steel Mills comments, focusing on remote control disconnect requirements for industrial facilities.</li> <li style="font-weight: 400;" aria-level="1">Existing large loads raise concerns, particularly around industrial facilities.</li> <li style="font-weight: 400;" aria-level="1">Potential revision requests might limit how much load can be served at a single station to mitigate frequency events.</li> <li style="font-weight: 400;" aria-level="1">Language impacting ERCOT maintenance outage reliability criteria in section four of the planting guide was discussed.</li> <li style="font-weight: 400;" aria-level="1">Recommendation to keep this item tabled for further discussion.</li> </ul> <a href="/sharing/?token=301cc920-daf6-4152-8ae7-b12665ddd4d7">12.3</a> - PGRR117, Addition of Resiliency Assessment and Criteria to Reflect PUCT Rule Changes - PLWG - Possible Vote <ul> <li style="font-weight: 400;" aria-level="1">ERCOT can recommend transmission projects to address identified resiliency issues.</li> <li style="font-weight: 400;" aria-level="1">The item was tabled for further language refinement.</li> <li style="font-weight: 400;" aria-level="1">NPRR1247, although not formally assigned, discussed system-wide energy cost reduction as a test for congestion cost savings.</li> <li style="font-weight: 400;" aria-level="1">ERCOT provided an overview of language incorporating this test into planning criteria.</li> <li style="font-weight: 400;" aria-level="1">PLWG is tracking NERC roundtable topics, including revisions to NERC CIP-014-4 and new reliability standard NERC TPL-008-1.</li> <li style="font-weight: 400;" aria-level="1">Open action item NPRR1070 on planning criteria for GT exit solutions remains tabled pending draft revision.</li> </ul> <h3>Action Items:</h3> <ul> <li style="font-weight: 400;" aria-level="1">Add assignment to review PGRR107 language to PLWG action items.</li> </ul> <a href="/sharing/?token=451cdfe1-751a-4dc3-8859-58461d641dfd">13</a> - Network Data Support Working Group - NDSWG - Gerardo Escamilla <ul> <li style="font-weight: 400;" aria-level="1"><a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/13-ndswg_report_to_ros_09_09_24.pptx">Presentation</a> and endorsement of NPRR1234 for modeling of single-owner loads of 25 megawatts or greater.</li> <li style="font-weight: 400;" aria-level="1">NPRR1234 involves reporting for every load, identifying whether it is commercial or residential, and specifying if it carries a single 25 MW load or multiple loads.</li> <li style="font-weight: 400;" aria-level="1">The endorsed NPRR will be part of normal procedures but discussions will continue at the next meeting on September 17.</li> <li style="font-weight: 400;" aria-level="1">Current understanding is that NPRR1234 will be provided as an attachment in modeling reports.</li> <li style="font-weight: 400;" aria-level="1">No further questions or comments were raised.</li> </ul> <a href="/sharing/?token=e74cb571-df69-4fc0-b07d-61dc5ab98acd">14 </a>- Dynamics Working Group <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/14-dwg-report-to-ros-august-2024.pptx">Update</a> - DWG - Paul Koberlein <ul> <li style="font-weight: 400;" aria-level="1">Instability in QSA study</li> <ul> <li style="font-weight: 400;" aria-level="2">Identified instability not solvable by curtailment</li> <li style="font-weight: 400;" aria-level="2">Caused by low short circuit ratio under p6 contingency</li> <li style="font-weight: 400;" aria-level="2">Solutions include reducing capacity or tuning inverter controls</li> <li style="font-weight: 400;" aria-level="2">FIS mitigation plans are helpful for TSPs</li> </ul> <li style="font-weight: 400;" aria-level="1">TSP Dynamic Devices </li> <ul> <li style="font-weight: 400;" aria-level="2">Clarification of requirements</li> <li style="font-weight: 400;" aria-level="2">ERCOT updated model quality guide in July</li> <li style="font-weight: 400;" aria-level="2">Presented details at IBR Working Group</li> <li style="font-weight: 400;" aria-level="2">Refer to DWG procedure manual, planning guide section 6.2, and model quality guide for full details</li> </ul> <li style="font-weight: 400;" aria-level="1">Flat start cases status update</li> <ul> <li style="font-weight: 400;" aria-level="2">Flat start tools updated to accommodate no breaker changes</li> <li style="font-weight: 400;" aria-level="2">First pass provided on 9/5/24</li> <li style="font-weight: 400;" aria-level="2">Feedback requested by 9/19/24</li> </ul> <li style="font-weight: 400;" aria-level="1">GFM update</li> <ul> <li style="font-weight: 400;" aria-level="2">ERCOT creating requirements and testing protocols for grid forming control systems</li> <li style="font-weight: 400;" aria-level="2">Draft PGRR and NOGRR languages to be presented during September IBR Working Group</li> </ul> <li style="font-weight: 400;" aria-level="1">Stability assessment for interim large load review</li> <ul> <li style="font-weight: 400;" aria-level="2">Clarification requested from ERCOT on when stability assessments are needed</li> <li style="font-weight: 400;" aria-level="2">Current requirement: TSPs study every large load</li> <li style="font-weight: 400;" aria-level="2">Previous attempt for a screening study in 2023 was tabled due to lack of consensus</li> <li style="font-weight: 400;" aria-level="2">Discussion to be reopened in October DWG meeting</li> </ul> <li style="font-weight: 400;" aria-level="1">DWG leadership</li> <ul> <li style="font-weight: 400;" aria-level="2">Vice chair agreed to serve as chair next year</li> <li style="font-weight: 400;" aria-level="2">Seeking volunteer for 2025 vice chair</li> <li style="font-weight: 400;" aria-level="2">Nomination hoped for next DWG meeting</li> </ul> </ul> <a href="/sharing/?token=1e357e1c-8682-4a6d-9747-8d5fce0b5630">14.1</a> - DWG Procedure Manual <ul> <li style="font-weight: 400;" aria-level="1">Received and addressed all comments on the <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/14-draft-dwg_procedure_manual_revision_21_nogrr245-draft-.docx">latest draft</a> of the DWG procedure manual.</li> <li style="font-weight: 400;" aria-level="1">Discussion on the draft took place at the last IBR working group meeting workshop.</li> <li style="font-weight: 400;" aria-level="1">Anticipating PUC decision on NOGRR245 in September.</li> <li style="font-weight: 400;" aria-level="1">DWG aims to request ROS approval of the procedure manual in October.</li> <li style="font-weight: 400;" aria-level="1">Draft procedure manual is posted on the DWG landing page for review.</li> <li style="font-weight: 400;" aria-level="1">Clarification sought and given: DWG is only discussing the manual today and will seek approval at ROS next month.</li> </ul> <h3>Next Steps</h3> <ul> <li style="font-weight: 400;" aria-level="1">Await PUC decision on NOGRR245 in September.</li> <li style="font-weight: 400;" aria-level="1">Seek ROS approval of the DWG procedure manual in October.</li> </ul> <a href="/sharing/?token=48c50b1a-9853-4941-9d8b-86b1e39c4c86">15</a> - Combo Ballot - Vote - Katie Rich <img src="/storage/docs/2024/09/Sept%20ROS%20Combo%20Details.png" width="582" height="165" /> <img src="/storage/docs/2024/09/Sept%20ROS%20Combo.png" width="582" height="560" /> <a href="/sharing/?token=10e13be4-7920-4e4d-ae58-2d376100d823">16</a> - Inverter Based Resources Working Group - IBRWG - Julia Matevosyan <ul> <li style="font-weight: 400;" aria-level="1">Julia Matevosyan provided the <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/03/16-ibrwg-report-to-ros-090924.docx">update</a></li> <li style="font-weight: 400;" aria-level="1">Discussion with SPWG on outreach closing schemes to ensure no conflicts with multiple ride-through requirements for IBRs. SAWG to review IEEE 2800 requirements and adjust schemes if necessary.</li> </ul> <ul> <li style="font-weight: 400;" aria-level="1">Discussion on RoCoF and phase jump measurements, considering the correct measuring window and the impact on IBRs.</li> <li style="font-weight: 400;" aria-level="1">Collaboration with DWG on procedure manual changes, with detailed responses from ERCOT to comments and proposed new tests</li> </ul> <ul> <li style="font-weight: 400;" aria-level="1">Ongoing DOE initiatives and NERC standard efforts focusing on IBRs and IEEE 2800 adoption.</li> <li style="font-weight: 400;" aria-level="1">Updates on PRC-028 and PRC-030 standards, which have passed their last ballot, while PRC-029 did not pass. A technical conference will be held to address industry disagreements on PRC-029.</li> </ul> <a href="/sharing/?token=aa65a6d6-9d86-45f8-9b77-44e9317b6af2">17</a> - Performance, Disturbance, Compliance Working Group - PDCWG - Kevin Bunch <ul> <li style="font-weight: 400;" aria-level="1">Kevin Bunch provided the <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/17-pdcwg-report-to-ros_090924.pptx">update</a></li> <li style="font-weight: 400;" aria-level="1">Primary discussion revolved around the 2025 methodology and frequency control metrics.</li> <li style="font-weight: 400;" aria-level="1">Current average is 14.31, significantly higher than the required 3.95.</li> <li style="font-weight: 400;" aria-level="1">Discussed SAR for clarification on requirement six, now including ESRs.</li> <li style="font-weight: 400;" aria-level="1">Comment period for SAR is closed.</li> <li style="font-weight: 400;" aria-level="1">Two new ICCP tags were released by ERCOT, sending total curtailment for solar and wind to all QSEs</li> <li style="font-weight: 400;" aria-level="1">No disturbances reported for July; no FMEs to review.</li> <li style="font-weight: 400;" aria-level="1">Next IBRWG meeting in September to discuss performance of IBRs during deep curtailment, particularly wind response during frequency events.</li> </ul> <a href="/sharing/?token=8218388c-60e9-4b45-87b1-1071b1146aaf">18</a> - Steady State Working Group - SSWG - William Robertson   <ul> <li style="font-weight: 400;" aria-level="1">No concerns from SSWG standpoint that would cause late posting.</li> <li style="font-weight: 400;" aria-level="1">Introduction of new load ID prefixes related to House Bill 5066 by ERCOT.</li> <li style="font-weight: 400;" aria-level="1">Pushback from some TSPs within SSWG on the new load ID prefixes.</li> <li style="font-weight: 400;" aria-level="1">Decision to wait until PGRR115 and NPRR1234 get more time and go through ROS before making changes.</li> <li style="font-weight: 400;" aria-level="1">ERCOT to come back and consolidate some of the existing load ID prefixes and discuss them at the next SSWG meeting at the end of September.</li> </ul> <a href="/sharing/?token=6e667d5d-f225-4d71-969f-5cb3f81d4b0f">19</a> - Voltage Profile Working Group <a href="https://ercot-control-docs.s3.us-west-2.amazonaws.com/30/19-vpwg_update_to_ros_aug_27.pptx">Update</a> - VPWG - Maribel Khayat <ul> <li style="font-weight: 400;" aria-level="1">Winter/spring voltage profile kickoff occurred.</li> <li style="font-weight: 400;" aria-level="1">Generator voltage performance report deferred to next year's first quarter.</li> <li style="font-weight: 400;" aria-level="1">ERCOT notified that some TSPs might receive invites to discuss exceedances in their service territory.</li> <li style="font-weight: 400;" aria-level="1">Next meeting scheduled for November 5.</li> </ul> <a href="/sharing/?token=16d6905d-2938-47cd-a155-f2e67b095e96">20</a> - Operations Training Working Group - OTWG - Manuel Sanchez <ul> <li style="font-weight: 400;" aria-level="1">No new updates for this month.</li> </ul> <a href="/sharing/?token=c26e4fca-d6b4-42a1-a513-a464351273d2">21</a> - Black Start Working Group - BSWG - Michael Dieringer <ul> <li style="font-weight: 400;" aria-level="1">Communication: Requesting ERCOT to conduct RFI on satellite phones and third-party data lines.</li> <li style="font-weight: 400;" aria-level="1">Dynamic frequency and reactive response: ERCOT to check OT training on SIP and simulate battery capabilities.</li> <li style="font-weight: 400;" aria-level="1">Requested grid forming, reactive support, and load balancing capabilities details.</li> <li style="font-weight: 400;" aria-level="1">Potential simulation benefits and processes for transmission projects with reactive devices to expedite Blackstart restoration.</li> <li style="font-weight: 400;" aria-level="1">Discussion on mutual assistance tabled.</li> <li style="font-weight: 400;" aria-level="1">Blackstart working group to discuss developing a new CBT for generator participants.</li> <li style="font-weight: 400;" aria-level="1">Requested ERCOT to perform a study or RFI on upgrading isochronous machines.</li> <li style="font-weight: 400;" aria-level="1">Constant frequency control: Discussions with QSEs on generator groups’ constant frequency control during state separation.</li> <li style="font-weight: 400;" aria-level="1">Blackstart gas coordination: Seeking more participation and information from the gas industry.</li> <li style="font-weight: 400;" aria-level="1">Dynamic verification: Reviewing ERCOT training for realistic simulation scenarios and possibly using Epery's tool.</li> </ul> <ul> <li style="font-weight: 400;" aria-level="1">Next meeting on 09/19/23</li> <li style="font-weight: 400;" aria-level="1">Encouraged generator participation in upcoming meeting.</li> <li style="font-weight: 400;" aria-level="1">Action item for POWG added and reviewed.</li> </ul> <a href="/sharing/?token=5f452a36-f428-4b96-bcd6-d36fe4e33898">22</a> - Other Business - Katie Rich <ul> <li style="font-weight: 400;" aria-level="1">No additional business was discussed.</li> <li style="font-weight: 400;" aria-level="1">Next meeting scheduled for October 3.</li> </ul> <a href="/sharing/?token=b20720a3-32eb-44da-b179-94fed2d9237a">24</a> - Adjourn - Katie Rich